Is apple weather available for iPad?

The Apple Weather App for iPadOS was released with iPadOS 16.1. iPadOS 16.2 is the most recent release.

iPadOS 16.2 is available for these models of iPad:

• iPad Pro (all models)
• iPad Air (3rd generation and later)
• iPad (5th generation and later)
• iPad mini (5th generation and later)

It's currently on my iPad; it was included in an iPadOS update (don't remember how long ago or which update). If you don't already have iPadOS 16.2, see: Update iOS on iPhone - Apple Support